Bug#971396: md4c: CVE-2020-26148

[Salvatore Bonaccorso <carnil@debian.org>]

Source: md4c
Version: 0.4.5-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/mity/md4c/issues/130
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for md4c.

CVE-2020-26148[0]:
| md_push_block_bytes in md4c.c in md4c 0.4.5 allows attackers to
| trigger use of uninitialized memory, and cause a denial of service
| (e.g., assertion failure) via a malformed Markdown document.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2020-26148
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26148
[1] https://github.com/mity/md4c/commit/22ca89a3008966c4316d6b0a158b1a49f9038df0
[2] https://github.com/mity/md4c/issues/130

Regards,
Salvatore